Rate- and state-dependent friction law and statistical properties of earthquakesA. Ohmura and H. Kawamura
Department of Earth and Space Science, Faculty of Science, Osaka University - Toyonaka 560-0043, Japan
received 6 November 2006; accepted in final form 2 February 2007; published March 2007
published online 2 March 2007
In order to clarify how the statistical properties of earthquakes depend on the constitutive law characterizing the stick-slip dynamics, we make an extensive numerical simulation of the one-dimensional spring-block model with a rate- and state-dependent friction law. Both the magnitude distribution and the recurrence-time distribution are studied with varying the constitutive parameters characterizing the model. While a continuous spectrum of seismic events from smaller to larger magnitudes is obtained, earthquakes described by this model turn out to possess pronounced "characteristic" features.
91.30.Ab - Theory and modeling, computational seismology.
© Europhysics Letters Association 2007